Improvement in smut-mills



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Improvement in Smut Mills. No.122,` ld; Parentedamwam imams xmwmyw l a/mWnm/adv. @Qmff i ff 67.) l j, WER'NWAG, zshreetsusheefz.

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NM1-22,591. Patented Jan. 9, 1872.

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JOHN WERNVVAG, OF HARPERS FERRY, WEST VIRGINIA, ASSIGNOR TO HIMSELF, WILLIAM B. WERNVVAG, OF SAME PLACE, AND JOSEPH P. SHANNON, OF BALTIMORE, MARYLAND. v

IMPROVEMENT IN SMUT-MILLS.

Specification forming part of Letters Patent No. 122,691, dated January 9, 1872.

- Specification describing certain Improvements in Stunt-Machines, invented by JOHN WERNWAG, of Harpers Ferry, in the county of Je'erson and State of West Virginia.

Figure "l is a top view; Fig. 2, a longitudinal vertical section; Fig. 3, a transverse vertical section; and Fig. 4, a detached view of the hopper and the eccentric that lnoves it.

This invention relates to an apparatus which receives grain as it cornes from the thrashingmachine in a hopper, whence it is carried through a conveycrtrough wherein it is scoured, and wherefrom it is discharged into a revolving conical screen within which it is beaten and separated from'refuse grain, and from which it is emptied into a fan, by Whose blast it is winnowed, the dust passing off through a trunk, the good grain falling through a spout, and the refuse grain being discharged by a conveyer. The novel features of the apparatus will be indicated in the claim.

Referring to the drawing, a is the hopper aforesaid, the same having a perforated bottom through Which the grain falls, and having also a spout, b, out by which pass all whitecaps and other stuff too large to follow the grain. The latter drops into a trough, c, lengthwise of which is placed a shaft, d, provided with a spiral flange, e, armed on one side with a continuous row of horizontal parallel teeth, j'. This shaft with its flange and teeth form the conveyer, by which the grain with its accompanying dust is conveyed along the trough c, the dust being forced out through perforations in the bottom of the trough, and the grain being scoured by the teeth f. An inclined spout opens out of the bottom of the trough c at the opposite end ofthe saine from the hopper a, through which spout the grain descends into a box through which passes a shaft, h, having on it within the box a spirallythreaded collar, t', which, as the shaft h is revolved, carries the grain into the conical screen j, which is mounted on the shaft h. This screen is constructed of perforated sheet-iron or steel, or of wire. It sits loose on the shaft h, and is revolved in an opposite direction therefrom by means of a pinion gearing with an annular rack, lc, that is fastened to the disk lthat forms the larger end of the screening cone. The shaft h is driven by any sufficient means, and through the medium of the pinion m and spurgear n rotates the shaft o that rotates the screen. Within the latter the shaft h is provided with a beater consisting of arlns p bearing rails q. Oups r attached to the inside of the screen take up the grain discharged into the cone by the screw i and carry it to the upper side of the cone, whence it falls, and in falling is subjected to the action of the beater, whereby small and broken kernels and lumps of foreign matter are separated from the grain and thrown out through the perforations of the screen. The good grain slides down the inclined under. side of the cone, and when it arrives at the larger end of the latter it escapes through holes s in the ring t, that is interposed between the disk Zand the end of the screen j. Oonverging guides u, located beneath the ring t and attached to the end of the case n, conduct the fallinggrain, with such dust as may still adhere to it, down to and through a hole, w, in the top ofthe horizontal trunk az. A fan-case, y, Fig. l, opens into the trunk x, and the blast from the fan winnows the grain thoroughly as it falls through the trunk driving the dust out through the latter. A spout, z, opening out of the bottoni of the trunk w, receives the winnowed grain and conducts it downward to the receiving-vessel. In the top of the trunk is a longitudinal slot, x1, through which the refuse grain thrown from the screen into the case t falls. In the bottom of the trunk m is a series of transverse slots, m2, through which the said refuse falls into a trunk, a', situated below the trunk x. Within the trunk a is placed a conveyer-screw, b', which is rotated by any sufficient means, and conveys the refuse grain to a hole, c', in the bottom of the trunk al, near the end ofthe saine, out through which hole the refuse falls.

The hopper a is jointed to the upper ends of two standards, d e. The standard d is attached, at its lower extremity, to a rock-shaft, j", mounted in lugs springing from a plate, g. The standard e is jointed at its lower end to the same plate. An arm, h', springing from the rock-shaftf and passing through a slot in 2. The conveyer-shaft d, combined with the spiral izmge e, teeth f, and perforated trough c, as described.

3. The screen j, combined with the case 1J, trunks w a', and conveyer-screw b', as specifled.

JOHN WERNWAG.

Witnesses C. LrT'rLEJoHN,

WM. B. WERNWAG. (57) 

